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  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
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  <body>
    <script>
      // const name = "jack";
      // const age = 20;
      // const email = "jack@qq.com";
      // const addr = "nanjin";
      const user = {
        name: "jack",
        age: 20,
        email: "jack@qq.com",
        addr: "nanjin",
      };
    </script>
  </body>
</html>
